How does the blower control module work on a blower heater?
The blower control module then translates this blower motor speed signal from the A/C-Heater control panel signal and applies the corresponding voltage directly to the blower motor. Empty. Battery Power From Underhood Fuse Box.
How to test the blower control module 3.8L?
Where To Buy The Blower Control Module And Save. TEST 1: Verifying The Blower Control Module Is Getting Battery Power And Ground. TEST 2: Bypassing the Blower Control Module. TEST 3: Verifying The Blower Speed Voltage Signal. More 3.8L GM Tutorials.
How does the a / C heater control module work?
It controls blower motor speed by varying the voltage it sends to the blower motor. Depending on what blower speed is selected from the A/C-Heater control panel, this voltage can range between 0 and 12 volts.
How is the speed of the blower motor controlled?
The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.
The blower control module then translates this blower motor speed signal from the A/C-Heater control panel signal and applies the corresponding voltage directly to the blower motor. Empty. Battery Power From Underhood Fuse Box.
Where To Buy The Blower Control Module And Save. TEST 1: Verifying The Blower Control Module Is Getting Battery Power And Ground. TEST 2: Bypassing the Blower Control Module. TEST 3: Verifying The Blower Speed Voltage Signal. More 3.8L GM Tutorials.
It controls blower motor speed by varying the voltage it sends to the blower motor. Depending on what blower speed is selected from the A/C-Heater control panel, this voltage can range between 0 and 12 volts.
Where can I buy a blower control switch?
To comparison shop for the blower control switch, take a look at this section here: Where To Buy The Blower Switch And Save. CASE 2: All circuits tested had continuity where indicated in the test steps.
Why is my GM 3.8L blower not working?
If the blower motor in your 3.8L GM vehicle is stuck in only one speed (usually stuck in high) or no blower speeds work, then there’s a good chance that the blower control module is bad and behind the problem.
When to test the blower control module ( GM )?
If your multimeter still does not register battery power or Ground in the indicated blower control module connector terminals, then you have found the problem that’ s keeping the blower motor from working or functioning correctly. If power is missing from the small connector Terminal B, then you need to check to see if the underhood fuse is blown.
How does the voltage affect the blower motor?
This varying voltage signal is the blower motor speed signal that tells it what blower speed you’ve just selected on the A/C-Heater control panel. The blower control module then translates this blower motor speed signal from the A/C-Heater control panel signal and applies the corresponding voltage directly to the blower motor. Empty.
If the blower motor in your 3.8L GM vehicle is stuck in only one speed (usually stuck in high) or no blower speeds work, then there’s a good chance that the blower control module is bad and behind the problem.
Why is my heater not working in my Pontiac Bonneville?
Most likely it’s the blower motor control module. It’s the equivalent of the resistors that are in manual heater control cars in the old days. It sits on top of the box near the blower motor. You have to loosen the one or two bolts holding the relay center that’s above the heater box there to get it out of the way.
Are there any problems with the Pontiac Bonneville?
One problem is the blower control module which is like the resistor coils for old blowers is an electronic unit on the auto temperature control models. It sits on top of the air box next to the blower motor under the hood. The relay center needs to be loosened (1 or 2 bolts) and raised to access it. Available at Advanced Auto, etc.